Sunrise 6:15 AM   Sunset 7:47 PM Moonrise 2:57 PM   Moonset 3:41 AM

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FXUS66 KSTO 190930 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 230 AM PDT Fri Apr 19 2024

Synopsis
Warm and dry weather continues into early next week. Locally breezy at times.

Discussion
A batch of high clouds is moving across NorCal early this morning as the upper ridge has weakened slightly by a passing short-wave trough. Offshore surface pressure gradient has weakened and transitioned to weak onshore and profiler data indicate the marine layer has returned to the coast with a depth of 1.5-2k ft. This may bring some minor cooling to the Delta and south valley today, but otherwise little change from Thursday is expected. Shower chances are expected to remain further south in the Sierra closer to the vort center currently approaching the coast near Vandenberg.

Ridge rebounds over the weekend and into early next week with highs expected to be well above-average (10-15 degrees), especially Sunday and Monday when warmest temperatures will be in the mid to upper 80s through the Central Valley with an outside chance for the first 90 degree readings of the season.

.EXTENDED DISCUSSION (Tuesday THROUGH Friday)...
Dry weather expected Tuesday under weak upper level ridging, then short wave trough progged to deepen over the CWA Wednesday into Friday. This will result in a threat of precip mainly over the northern and eastern foothills and mountains and Northern Sac Valley. Storm total QPF looks to be light with minimal impacts to mountain travel. Above normal high temperatures forecast Tuesday, then near to slightly below normal through the remainder of the week.

AVIATION
VFR conditions over interior NorCal next 24 hrs. Sfc wind mainly below 12 kts except vcnty of Delta SWly sustained wind up to 20 kts.

STO WATCHES/WARNINGS/ADVISORIES
None.

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